Forming-machine.



PAEEENTED APR.14, 1908.

' W. 0. BURRBLL. FORMING MACHINE.

APPLICATION FILED MAE. 14.1904.

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PATENTED APR-14, 1908.

APPLICATION FILED MAR.14.1904.

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PATENTED APR. 14; 1908.

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PATENTED APR. 14, 1908,

W. G. BURRELL. FORMING MACHINE.

APPLICATION FILED MAR. 14. 1904.

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WILLIAM C. BURRELL, OF KANKAKEE, ILLINOIS.

FORMING-MA CHINE Specification of Letters Patent.

Patented April 14, 1908.

Application filed March 14, 1904. Serial No. 198,004.

T 0 all whom it may concern:

Be it known that 1, WILLIAM C. BURRELL, a citizen of the United States, residing at Kankakee, in the county of Kankakee and State of Illinois, have invented a new and useful Improvement. in Forming-Machines, of which the following is a specification.

My invention relates particularly to machines of the general type illustrated, for instance, in Letters Patent No. 715,046, granted to Moore and Lorenz, as assignees of Hugo W. Forslund, Dec. 2, 1902, my improved machine being peculiarly advantageous for use in forming sheet-metal blanks into open vessels, such as elevator-buckets.

My rimary object is to provide a machine embo ying a distinct novel organization of parts, whereby simplicity of construction and automatic operation, so far as the formation of each individual bucket is concerned, are attained.

In the construction shown, the machine comprises a compound female die; a vertically reciprocating male die serving to force the blank into the compound die, thereby to impart to the blank the general shape of a bucket and force the end-forming portions of the blank to approximately their closed positions; a pair of horizontally reciprocating presser-members which serve to force the endmembers of the compound die inwardly to give the required set to the metal after the ends of the bucket have been preparatorily turned during the descent of the male die; and gear-mechanism whereby, upon movement of a hand-lever, a cycle of operations is effected and the operation of the dies then suspiended ending the removal of the formed buc et an the insertion of a new blank. It may be explained here that the machine, in the preferred embodiment, also is equipped with a constantly rotating gear-wheel which receives its motion from a pinion actuated through the medium of a friction clutch, with which ear the shaft which actuates the male die and end resser-members is operatively connected manually, as desired, and automatically disconnected after the completion of each cycle of operations.

My invention is illustrated in its referred embodiment in the accompanying rawings,

in which- Figure 1 represents a view partly in front elevation and partly in section of the improved machine, the section being taken as indicated at line 1 of Fig. 4; Fig. 2, an enlarged plan view of a device employed in the adjustment of the reciprocating pressermembers; Fig. 3, a section taken as indicated at line 3 of Fig. 2; Fig. 4, a plan view of the machine; Fig. 5, a perspective view of a portion of a compound female die employed; Fig. 6, a perspective view of the male die employed Fig. 7, a view of the right side of the machine (facing with the machine); Fig. 8, a view of the cam employed for reciprocating the male die; Fig. 9, an inner view of an end member of the compound die mentioned; Fig. 10, a section taken as indicated at line 10 of Fig. 9; Fig. 11, a plan section taken gpproximately as indicated at line 11 on ig. 7; Fig. 12, an enlarged broken section taken as indicated at line 12 of Fig. 11; Fig. 13, a view of a detached frame-member equipped with a cam for automatically maintaining connection between the shaft which actuates the male die and the end pressermembers and the rotating gear journaled upon said shaft; Fig. 14, a pers ective view showing the relative positions 0 the dies and the blank at the moment the male die is about to descend, the blank being shown in full lines and the dies in dotted lines (the end members of the female die being omitted); Fig. 15, a similar view showing the relative positions when the bucket is partially formed one of the end-members of the compound die being shown in position; Fig. 16, a perspective view showing the relative positions when the bucket is com leted; Fig. 17, a section taken as indicate at line 17 of Fig. 4, and showing a detail of one of the presser-members employed; and Fig. 18, a view of a key employed in the adjustment of the pressermembers.

A description of the preferred construction is as follows: A represents the frame of the machine equipped at its upper portion with a transversely-extending bed A which supports the com ound female die employed; B, a com ound emale die having a stationary centra member B and reciprocable s ringretracted end-members B B B, l3 a pair of reciprocable presser-members actuated at each cycle of operations, to force the die-members B B to ether; C, a vertically reciprocable male cross-head C moving in a guide C and actuated by a lever C fulcrumed on a standard C, which carries the guide C G a connecting rod joined to the rear end of the beam C and connected with a cross-head C movable ie carried by a in a vertical guide C D, a Constantly rotating shaft operated through the medium of a friction-clutch D of any suitable construction, controlled by a lever D D a pinion fixed on the shaft D E, a normally inactive horizontal shaft journaled in suitable bearings E, E E a gear mounted idly on the shaft E and constantly rotated through the medium of the inion D E (Figs. 8 and 11), a cam fixe to the shaft E and operatively connected by a pin E (Fig. 7) to the cross-head C which serves to actuate the lever C F (Fig. 12), a key movable longitudinally of the shaft E and connected with a sleeve F shiftable through the medium of a bell-crank lever F projecting past the front of the frame of the machine, the free end of said lever being held normally elevated by means of a spring F (shown in dotted lines in Fi 7); F, a frame-member (Fig. 13) provideE at its central portion with a perforation for the shaft E, with a key-way F opening into said perforation, and a circular cam F at one side of the frame-member and bordering on the shaft-receiving perforations E, a bevelear fixed on the inner end of the shaft E, anc serving to communicate motion through a bevel-gear E vertical shaft E spur-gear E, and spur-gear E E, to vertical shafts E, E respectively; and E, E, crank-disks secured to the upper end of the shafts E E respectively, and joined by connecting rods E E to the presser-members B, B", respectively.

The frame A may be of any suitable construction, and the construction shown need not be specifically described. The bedA has, as shown in section in Fig. 17, a suitable way for the presser-members 13 ,13 Each pressermember comprises a slide provided with a head for engaging the corresponding diemember, and the slides are removably secured in place by removable plates 1). Adjustably connected with each slide is a bearing 6 which receives the pin of the connect ing rod which serves to actuate the slide. Each bearing-plate may be clamped to the internal flanges or tongues b with which the corresponding slide is provided, a screw-connected top-plate 6 being employed for the purpose. For adjustment purposes, there are provided wedge-members b b 1) (Fig. 2). The member b may be roughly adjusted with relation to the slide by means of pins 5 which may be set in any desired pair of two series of perforations b with which the tongues b of the slides are provided. The members b are connected by clamping bolts b which connect the members 6 and l) and pass through slots 6 with which the member 6 is provided. Adjacent edges of the members 11 b", are recessed, as shown at I), and the walls of said recesses are provided with a series of de ressions, for the purpose of receiving a key 12 (Fig. 18) which servesin the adjustment of the members b b, with relation to each other.

The male die C has a cross-section corre-' sponding with the cross-section of the bucket,- and the fixed member B of the female die is suitably recessed to receive the die C. The ends of the die-member B are open, as shown. Projecting from the ends of the member B are pins b encircled by coil springs b and extending through perforations b in the end die-members, the end diemembers being secured against removal from the pins by means of cotter-pins 6 The end die-members are provided at their inner vertical surfaces with recesses b corresponding in cross-section with the cross section of the recess in the die-member B the upper portions of the end die-members being beveled at said recesses, as shown at I). The internal walls of the die-member B are beveled at their upper portions, as shown at I). The friction-clutch through which motion is imparted to the shaft D need not be described in detail, as no novelty for the clutch is claimed. 4

The key F has a projection f which moves in the slot F -of the frame-member F and has a shoulder f which serves to engage the cam F, after the key has been shifted to lock the gear E to the shaft E. I t will be noted that the cam F 6 has flaring beveled surfaces f flanking the slot F and a surface f lying in a vertical plane. When the lever F is depressed, thereby shifting the sleeve F to the left from the position shown in Fig. 7, the key is caused to lock the gear E to the shaft E, and the vertical shoulder f of the key rides upon the cam F until the shaft makes a revolution, whereupon the spring F draws the free end of the hand-lever upwardly, thereby withdrawing the key and permitting the gear E to rotate idly.

From the foregoing detailed description, the operation Wlll be readily understood. The dies being properly secured in place, and the presser-members B, B being adjusted at proper distances from the end-members B B of the female die, the lever D is employed to connect the shaft D so that it will rotate with the pulley of the clutch. In this condition, the gear E of the driving mechanism rotates idly upon the shaft E. Blanks it may now be fed by the operative to the machine, the operative, after the insertion of each blank, pressing the hand-lever F and thereby keying the shaft E to the gear-wheel E this connection being maintained during one revolution of the shaft E, whereupon the shaft is automatically disconnected from the gear-wheel. Each blank it has a rear sideforming portion h end-forming portions 72?, h, and a front-forming portion h. forming portions of the blank have beveled lower edges h", which co-act with the bevel surfaces 19 of the end'members of the female The end- I die, as the male die descends, thereby bending the end-forming portions of the blank to their proper positions. The extreme lateral margins h of the portions h k are bent around to form flanges which overlap the corresponding margins of the front-piece k After the descent of the male die, the latter remains within the bucket, owing to the shape of the cam E while the shaft E completes its rotation and causes the pressermembers B, B to advance and force the end-members of the female die toward each other, thereby giving to the metal of the bucket the required set.

It will be understood that many changes in the details of construction within the spirit of my invention may be made, hence no undue limitation should be understood from the foregoing detailed description.

' What I regard as new, and desire to secure by Letters-P atent, is

1. The combination of a vertically reciprocating male die, a female die having a fixed open ended member and spring retracted slidable end-members provided with surfaces for turning the end-forming portions of the blank during descent of the male die, and mechanism equipped with reciprocating presser-members serving to force the endmembers of the female die towards each other after the male die has completely entered, for the purpose set forth.

2. The combination of a suitable driving mechanism, a reciprocable male die, a female die, presser-members movable longitudinally of the female die, gear mechanism serving to actuate the male die and the presser-members, and connecting mechanism between the driving mechanism and gear mechanism, comprising a cam-controlled clutch-member, whereby connection is maintained for a predetermined period, for the purpose set forth.

3. The combination of suitable driving mechanism, a reciprocable male die, a female die, presser-members, gear mechanism serving to actuate the male die and the pressermembers, and connecting mechanism between the driving mechanism and gear mech anism, comprising a manually-shifted springretracted cam controlled clutch member serving to maintain connection during a cycle of operations upon the-blank.

4.. The combination of suitable die-members for operating upon a blank, gear mechanism through the medium whereof the diemembers are actuated, driving mechanism, and connecting mechanism comprising a shiftable clutch-member, a stationary cam serving to maintain said clutch-member in operative engagement with its companion member durin a predetermined period, and means for shifting said first-named clutchmember at proper intervals, for the purpose set forth.

5. The combination of suitable die-members for operating upon a blank, gear-mechanism through the medium whereof the diemembers are actuated and including'a normally inactive shaft, driving mechanism including an idly rotating gear journaled on said shaft, and connecting-mechanism comprising a stationary cam having a perforation receiving said shaft, a shiftable clutchmember provided with a shoulder for engaging said cam, and means for shifting said clutch-member at proper intervals, for the purpose set forth.

6. The combination of suitable die-members for operating upon a blank, gear-mechanism through the medium whereof the diemembers are actuated and including a normally inactive shaft, driving mechanism including an idly rotating gear journaled on said shaft, and connecting-mechanism comprising a perforate stationary cam through which said shaft passes, said cam having a lateral cam-surface with beveled portions and a key-way meeting said beveled portions, a shiftable clutch-member keyed to said shaft and having a key extending'through the key-way of said cam, said key having a shoulder for engaging the cam-surface, thereby to maintain connection, during a revolution of said shaft, and means for manually shifting said clutch-member to effect engagement and automatically retracting said clutch-member to effect disengagement, for the purpose set forth.

7. In mechanism of the character described, the combination of a normally inactive shaft, a normally rotating gear journaled on said shaft and provided with a keyway, a frame-member having a' perforation receiving said shaft, a key-way opening into said perforation, and a lateral cam bordering on said perforation, a clutch-member splined upon said shaft and provided with a key having a shoulder serving to engage said cam, a lever serving to shift said clutch-member, and potential means for shifting said lever in one direction whereby said clutch-member remains normally disengaged, for the purpose setforth.

8. The combination of a suitable frame, a compound female die supported thereon and having horizontally reciprocating members, a pair of presser-members serving to force said end die-members toward each other, a vertically reciprocable male die, gear-mechanism comprising a normally inactive shaft equipped with a cam serving to actuate said male die, and resser-member actuating shafts geared to said first-named shaft, driving mechanism comprising a gear normally rotating idly upon said first-named shaft, and connecting mechanism comprising a clutchmember splined upon said first-named shaft, and means for controlling the movements of said clutch-member, for the purpose set forth.

9; Thecombination of a suitable frame, a compound female die supported thereon having a stationary central member and springretracted end-members provided at their in.- ner vertical surfaces with recesses corresponding in cross-section with the cross-section of the die-opening in the central member, said recesses of the end-members having" walls terminating at their upper portions in beveled surfaces, areciprocable male die, and mechanism serving-first to depress the male die and then force the end-members of the female die towards each other, for the purpose set forth.

10. In a machine of the character described, the combination with a suitable frame, a female die supported thereon having a stationary central member and reciprocable end-members, horizontally-reciprocable presser-members for forcing said endmembers toward each other, a vertically re- 'ciprocable maledie, a lever fulcrumed on a suitable pivot and serving to actuate the male die, a horizontal shaft equipped with a cam serving to actuate said lever, vertical.

shafts geared to said first-named shaft, and connecting means between said vertical shafts andsaid presser-members, for thepurpose set forth.

11. In a machine of the character described, the combination of a suitable guide, a presser-member connected with said guide comprising a hollow slide equipped with internal flanges, wedge-members supported on said flanges, a pivot-bearing engaged by one of said wedge-members and equipped with means whereby it may be clamped to said flanges, and actuating means connected with said pivot-bearing, for the purpose set forth.

WILLIAM C. BURRELL.

In the presence of WALTER N. WINBERG, W. B. DAVIES. 

